Command Port Cables
DCE to DCE cabling
PIN NO.
1
2
3
4
5
6
7
8
20
22
25
1
2
3
4
5
6
7
8
20
22
25
To
MultiMux
Command
Port
Connector
To
DCE
Device
(Communication
Device
i.e. Modem)
CHASSIS GROUND (AA)
TRANSMIT DATA (BA)
RECEIVE DATA (BB)
DATA SET READY (CC)
SIGNAL GROUND (AB)
DATA TERMINAL READY (CD)
PIN NO.
DCE to DTE cabling
PIN NO.
1
2
3
4
5
6
7
8
20
22
25
1
2
3
4
5
6
7
8
20
22
25
To
MultiMux
Command
Port
Connector
To
DTE
Device
(Terminal
Device
i.e. ASCII
Terminal)
CHASSIS GROUND (AA)
TRANSMIT DATA (BA)
RECEIVE DATA (BB)
CLEAR TO SEND (CB)
DATA SET READY (CC)
SIGNAL GROUND (AB)
CARRIER DETECT (CF)
DATA TERMINAL READY (CD)
PIN NO.